Analysis apparatus, analysis method, and non-transitory storage medium for deciding the number of occupants detected in a vehicle

An analysis method executed by a computer, the method comprising:

• detecting persons from a first image generated by a first camera for capturing a vehicle passing through a road;
• detecting a number of occupants in the vehicle captured in the first image, based on a first detection result of the first image;
• detecting the persons from a second image generated by a second camera for capturing the vehicle passing through the road;
• detecting the number of occupants in the vehicle captured in the second image, based on the a second detection result of the second image;
• determining whether or not the first image and the second image satisfy a predetermined condition;
• and
• deciding, in a case where the first image and the second image satisfy the predetermined condition, the number of occupants in the vehicle using the number of occupants in the vehicle captured in the first image and the number of occupants in the vehicle captured in the second image,
• wherein the first camera is installed along the road having two or more lanes, and captures the vehicle passing through a first lane other than a second lane closest to the first camera, among the two or more lanes, from a side,
• wherein the second camera is installed above the road having the two or more lanes, and captures the vehicle passing through the first lane other than the second lane closest to the first camera, among the two or more lanes, from a front, and
• wherein the predetermined condition relates to one or multiple of:
• a time when the first image is generated and a time when the second image is generated has a predetermined relationship,
• a difference between the time when the first image is generated and the time when the second image is generated is within a reference value,
• the difference between the time when the first image is generated and the time when the second image is generated is within a reference range, and
• a content obtained via consideration of a before-and-after relationship of a position of the first camera at which the first image was generated and a position of the second camera at which the second image was generated with respect to a traveling direction of the vehicle.

A non-transitory storage medium storing a program causing a computer to:

• detect persons from a first image generated by a first camera for capturing a vehicle passing through a road;
• detect a number of occupants in the vehicle captured in the first image, based on a first detection result of the first image;
• detect the persons from a second image generated by a second camera for capturing the vehicle passing through the road;
• detect the number of occupants in the vehicle captured in the second image, based on the a second detection result of the second image;
• determine whether or not the first image and the second image satisfy a predetermined condition;
• and
• decide, in a case where the first image and the second image satisfy the predetermined condition, the number of occupants in the vehicle using the number of occupants in the vehicle captured in the first image and the number of occupants in the vehicle captured in the second image,
• wherein the first camera is installed along the road having two or more lanes, and captures the vehicle passing through a first lane other than a second lane closest to the first camera, among the two or more lanes, from a side,
• wherein the second camera is installed above the road having the two or more lanes, and captures the vehicle passing through the first lane other than the second lane closest to the first camera, among the two or more lanes, from a front, and
• wherein the predetermined condition relates to one or multiple of:
• a time when the first image is generated and a time when the second image is generated has a predetermined relationship,
• a difference between the time when the first image is generated and the time when the second image is generated is within a reference value,
• the difference between the time when the first image is generated and the time when the second image is generated is within a reference range, and
• a content obtained via consideration of a before-and-after relationship of a position of the first camera at which the first image was generated and a position of the second camera at which the second image was generated with respect to a traveling direction of the vehicle.